National Stock Number
5310-00-045-3296
National Stock Number (NSN) 5310-00-045-3296, or NIIN 000453296, (washer,lock) was assigned May 25, 1967 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 44 stock numbers. Five of the National Stock Numbers that it replaces are: 5310002096093, 5310011332048, 5310004841218, 5310002091180, 5310001766435.
There are 111 manufacturer part numbers associated with this NSN. 46 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 77 suppliers. Today, 55 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 30 suppliers are deemed design controlled or valid supply parts. ISO Group has built a very strong supply chain for this NSN. We have direct relationships with 73 sources of supply.
This part number has not been procured by the US Government in over a year. There have been 8 contracts issued for this part number, with 9 awards given. There is moderate competition for this NSN. The US Government has awarded contracts to 8 different suppliers. The last contract numbers awarded were: SPE4A624V261F, SPM5AZ08D0044, SPM5AZ08D0044, SPM5AZ08D0044, SPM5AZ08D0044. The total value of the awarded contracts has been US$ 194,364.59.
This NSN is very common among different weapons systems, belonging to 649 different platforms.
This national stock number is in high demand. Globally, demand for this NSN has originated from 30 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 30, 2019, this NSN's acquisition method was noted as: Not established. Not established.
This NSN is assigned to Item Name Code (INC) 14218. [A WASHER, USUALLY ROUND, WITH A CENTRALLY-LOCATED HOLE. ITS EDGES AND TWO BEARING SURFACES ARE DESIGNED IN SUCH A WAY THAT APPLIED PRESSURE BRINGS INTO PLAY THE SPRING TENSION AND/OR FRICTIONAL LOCKING PRINCIPLE THAT MATERIALLY RESISTS ANY TENDENCY TOWARD TURNING. IT MAY BE MADE OF ONE OR TWO PIECES.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5310000453296 does not contain precious metals.
This information was last updated on Aug 01, 2025.